YouTube star who gained fame for his channel Markiplier, uploading videos of him and his friends playing and commenting on video games. His channel has earned over 20 million subscribers.
He originally aspired to become a voice actor.
In 2015, he had emergency surgery and posted a video from his hospital bed which received over 5 million views.
He and Rosanna Pansino published a Youtube video of an Urban Dictionary challenge in 2016.